Plow-adjusting device



July 28, 1925.

. l I 71176215507. A

Filed March 13. 1922 w s GRAHAM PLOW ADJUSTING DEWIGE' Patented July 28,1925.1

- UNITED ,STATES PATENr OFFICE.A

. WILLIAM s. GRAIIAivnoE CANTON, ILLINoIs, AssIeNoR TO. INTERNATIONALHAR- F,

. vEsTER COMPANY, A CORPORATION OE NEW JERSEY.

I'LowAnJUsTING DEVICE.

Application filed March 13, 1922. I Serial No. 543,169.

To all whom t may concern:

Be it knownthat I', WILLIAM S. GRAHAM, a citizen of the United States,residing at Canton, in the county of Fulton land State of Illinois, haveinvented certain new and useful Improvements in vPlow-Adjusting Devices,of which the following is a full, clear, and exact specification.

This inventionrelates to improvements in adjusting mechanism for lighttractor plows, and particularly to a substitute for'the usual hand leverheretofore employed for adjusting the ,front furrow wheel of power liftplows. L

The object of the invention is to eliminate the handlever, which usuallyis obliged to swing with. the crank v:axle carrying the furrow wheel,and yto substitutetherefor a simple form of adjusting mechanism whichwill be accessible at all'times to the driver'v l isv formed with an'eye23, and a forwardly of `the tractor pulling the plow.

' 'This object is accomplished by providing a simple form of screwadjustment for the front furrow wheel having a forwardly projectingoperating shaft supported on the plow in a novel manner and connected tothe screw in a manner not to interfere with the movement of the furrowwheel, and to permit adjustment of the wheel whether the plows areraised or lowered.

Referring to the drawings` f Fig. 1 is a plan view of the plow embodyingthe invention;

Fig. 2 is a side elevation of the same; and- The invention isillustrated in connection with a light tractor plow comprising a pair ofrigidly connected plow beams 10 supported on a crank axle 11 carryingthe land wheel 12, and a second forwardly spaced crank axle 13 carryingthe furrow wheel 14. The crank axle 11 is provided with a bracket 15which has bearings for a stub shaft on which the land wheel 12 ismounted, and which also serves to support a power lift mechanismcomprising a clutch 16 through which the vstub shaft is intermittent-lyrotated, the stub shaft having its inner end formed with a crank 17connected by a link 18 with a leverrl) pivoted on the plow beams andadjustably lockedV to a rack 20. This mechanism is not further describedas it does not differ from power liftI mechanisms known to the art, itbeing sufficient for the purposes of this disclosure to understandvthere is pivoted a threaded sleeve 21. The

' Fig. 3 is a detail view of a modied form. Y

that lever 19 serves to adjust the landwheel axle, and that the actionof the clutch, which vis connected by link ,18 to this lever, serves toswing the crank of the land wheel axle Vupwardly vand downwardly toraise and lower the plows The furrow side end of the land wheel axle 11is ,provided` with an upwardly directed crank 11a, which is forked,` andbetween the arms of which 5.65 furrow wheel axle 13 had a similar crankorarm 13a fixedthereto atv its angle, and in the fork of this arm thereis mounted a bearing sleeve 22. A screw shaftl 23 is mounted in bearingsleeve 22, andl formed 31.0

"with a threaded end in engagement with sleeveV 21, the movement of theshaft 23 longitudinally 'through sleeve 22 being prevented by suitablemeans, such as stopcollars 24. The forward end of screw shaft 23 i75projecting, Operatingrod 25 has an eye25a interlocked therewith. Theoperating rod 25 is supported on a standard 26 preferably formed of apair of converging bars fixed to Opposite sides of the frame and havingan aperture in its upper end receiving the ro'd in the manner to permitrit to slide longitudinally therein. The forward end of rod 25 isprovided with an operating crank 25b positioned forwardly ofthe plows soas to be readily accessible to a driver seated on a;

tractor. A

In the modified construction of Fig. 3, a pivoted standard 27 issubstituted for the fixed standard 26of the other form, vand in lieu ofthe sliding connection for rod 25,

.the upper end of standard 2 7 is formed as a fork 29 in which ispivoted a sleeve 30 in which .rod'25 is journaled and retainedV bysuitable means such as stop collars. With this construction, standard 27will be rocked by movement of rod 25 as the plows are raised or lowered.

v It will be evident that this construction provides an adjustableconnection through shaft; 23 between the land and furrow wheel axles,and that they will be jointlyk swung by operation of the powerv liftmechanism and jointly adjusted and locked in adjusted position by thehand lever 19. When, however, it is desired to adjust the furrowk wheelalone, ii; will only be necessary to rotate the rod^25, thereby causingscrew shaft 23 to either increase or shorten the Vdistance beshaft 23and operating shaft 25 adjustment of the furrow wheel is possible in anyposition of the plows, and as the operating shaft' 25 is movable in alongitudinal direction either on or with its support it will notinterfere with the lifting and lowering of the plows, andlits1operatingcrank will always be in position to ,be reached by theoperator.

While it is admittedly not new to `connect the lanldyand fur-row wheelaxles of a power lift plowfbyaneans of a screw shaft, the constructionand arrangement of the operatingjrod and` its connection to the screwshaft present a simple and 'novel combinaton of' 'elements forregulating the furrow Wheel.

I Claimy as rnycinvention:

lilna tractorgang plow ha-ving rigidly connected plow lbeams and cranked'axles forthe land and furrow wheels journaled on said beams, thecombination with the .furrow wheel 4axle 1 of adjusting means thereforloomprising :an arm fixed to the furrowwheel axle,y asecond armconnected tothe land wheelf axle, means 'includinga hand lever for`locking said land V`wheel axle and second arm in adj-ustedposition,lbearing, collars-on said arms, a shaftJ revoluble in vsaid collars, thecollar on said rst mentioned-farm being held against movementlongitudinally of the shaftand the other being in threaded engagement-tl-ierewith;1and'means 'for tunning said shaftto#adjustithe#furrowwheel com-V prising a rod having a universal joint connection with saidshaft and moving longitudinally .with saidishaft as the axles areswung,Y said rod extending forwardly in advance o-f the. beams, .and .aswingingestandlard on the forwardi-endof thebeams .mov--ablysupportingsaid rod;

2.111 a tractor .gang/plow havingrigidly connected plow beamssupported`on wheels .l

having. cranked axles journaled on the bea1ns,f.th e .combination with.the axles k,of adjusting 'mechanism comprising; .a v connection between.the axlesffor causing; them to swing in yunison :whenthe ,plows,areraised r and lowered, and 4means. foradjusting sa-id connection. 'tovary the -v relative .positions of the wheelsincluding a forwardlyextending rod flexibly joined to saidconnection and .provided .withanzoperating lhandle on its forward endjsaidfrod.movingin a fore anda-ftdirectionvvhenghe :axlesfare moving, andA ,a yhinged standardcarriedfbythe plow on which said rod is '.pivotally supported.V

In y, testimony rwhereof I 'aiiximy signature.

WILLIAMS. GRAHAM;

